<div class="display_value">
  <span class="value1" *ngIf = "values.length >=1"><small><strong>{{values[0]}}</strong></small></span><br/>
  <span class="value2" *ngIf = "values.length >=2"><small><strong>{{values[1]}}</strong></small></span>
</div>

<!-- <span><button (click)="openModal()"  class="btn btn-success btn-sm">more...</button></span> -->
<span class="more-btn"  *ngIf="expressions.length >= 2" (click)="openModal()">more</span>
